JPS57182112A - Range detector - Google Patents

Range detector

Info

Publication number
JPS57182112A
JPS57182112A JP6674381A JP6674381A JPS57182112A JP S57182112 A JPS57182112 A JP S57182112A JP 6674381 A JP6674381 A JP 6674381A JP 6674381 A JP6674381 A JP 6674381A JP S57182112 A JPS57182112 A JP S57182112A
Authority
JP
Japan
Prior art keywords
reflected light
light spot
incidence
image
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6674381A
Other languages
Japanese (ja)
Inventor
Satoshi Yamane
Toshitatsu Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6674381A priority Critical patent/JPS57182112A/en
Priority to DE19823216246 priority patent/DE3216246A1/en
Publication of JPS57182112A publication Critical patent/JPS57182112A/en
Priority to US06/717,604 priority patent/US4601574A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument

Abstract

PURPOSE:To obtain an apparatus high in the resolution and durability with limited power by extracting variations in a pulse light projected to an object based on the incidence of the reflected light spot from the output of a position detector adapted to form the image of the reflected light spot so arranged to enable continuous detection. CONSTITUTION:A position detectror is arranged at the point where the reflected light spot of a pulse light projected on an object forms an image to continuously detect the direction at which the position of the incidence of the reflected light spot changes with the variation in the distance of the object. A detection circuit is provided to obtain signals corresponding to the distance of the object by only extracting variation in the pulse light based on the incidence of the reflected light spot thereof from the output of the detection from the position detector. For example, the reflected spot forms an image at points 5a-5d of the position 7a to an infinite value of the object 7 and the position thereof is detected from the rate of the output of two currents. The effect of a normal light is removed by the detection circuit 9.
JP6674381A 1981-05-01 1981-05-01 Range detector Pending JPS57182112A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6674381A JPS57182112A (en) 1981-05-01 1981-05-01 Range detector
DE19823216246 DE3216246A1 (en) 1981-05-01 1982-04-30 DISTANCE MEASURING DEVICE
US06/717,604 US4601574A (en) 1981-05-01 1985-04-01 Distance measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6674381A JPS57182112A (en) 1981-05-01 1981-05-01 Range detector

Publications (1)

Publication Number Publication Date
JPS57182112A true JPS57182112A (en) 1982-11-09

Family

ID=13324652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6674381A Pending JPS57182112A (en) 1981-05-01 1981-05-01 Range detector

Country Status (1)

Country Link
JP (1) JPS57182112A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201009A (en) * 1983-04-30 1984-11-14 Fuji Photo Optical Co Ltd Auto focus detecting device
JPS63206610A (en) * 1987-02-24 1988-08-25 Matsushita Electric Works Ltd Distance measuring apparatus
US5148211A (en) * 1989-10-20 1992-09-15 Fuji Photo Film Co., Ltd. Stabilized range finder for use with an electronically controlled camera

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158508A (en) * 1981-03-26 1982-09-30 Minolta Camera Co Ltd Distance detecting device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158508A (en) * 1981-03-26 1982-09-30 Minolta Camera Co Ltd Distance detecting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201009A (en) * 1983-04-30 1984-11-14 Fuji Photo Optical Co Ltd Auto focus detecting device
JPS63206610A (en) * 1987-02-24 1988-08-25 Matsushita Electric Works Ltd Distance measuring apparatus
US5148211A (en) * 1989-10-20 1992-09-15 Fuji Photo Film Co., Ltd. Stabilized range finder for use with an electronically controlled camera

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